I could peep you could peep he could peep we could peep you could peep they could peep
V-ing form
I could be peeping you could be peeping he could be peeping we could be peeping you could be peeping they could be peeping
Perfect
I could have peeped you could have peeped he could have peeped we could have peeped you could have peeped they could have peeped
V-ing perfect
I could have been peeping you could have been peeping he could have been peeping we could have been peeping you could have been peeping they could have been peeping
Negation
Simple form
I couldn't peep you couldn't peep he couldn't peep we couldn't peep you couldn't peep they couldn't peep
V-ing form
I couldn't be peeping you couldn't be peeping he couldn't be peeping we couldn't be peeping you couldn't be peeping they couldn't be peeping
Perfect
I couldn't have peeped you couldn't have peeped he couldn't have peeped we couldn't have peeped you couldn't have peeped they couldn't have peeped
V-ing perfect
I couldn't have been peeping you couldn't have been peeping he couldn't have been peeping we couldn't have been peeping you couldn't have been peeping they couldn't have been peeping
Interrogative form
Simple form
could I peep? could you peep? could he peep? could we peep? could you peep? could they peep?
V-ing form
could I be peeping? could you be peeping? could he be peeping? could we be peeping? could you be peeping? could they be peeping?
Perfect
could I have peeped? could you have peeped? could he have peeped? could we have peeped? could you have peeped? could they have peeped?
V-ing perfect
could I have been peeping? could you have been peeping? could he have been peeping? could we have been peeping? could you have been peeping? could they have been peeping?
Interro-negative form
Simple form
couldn't I peep? couldn't you peep? couldn't he peep? couldn't we peep? couldn't you peep? couldn't they peep?
V-ing form
couldn't I be peeping? couldn't you be peeping? couldn't he be peeping? couldn't we be peeping? couldn't you be peeping? couldn't they be peeping?
Perfect
couldn't I have peeped? couldn't you have peeped? couldn't he have peeped? couldn't we have peeped? couldn't you have peeped? couldn't they have peeped?
V-ing perfect
couldn't I have been peeping? couldn't you have been peeping? couldn't he have been peeping? couldn't we have been peeping? couldn't you have been peeping? couldn't they have been peeping?